Are Mollies Aggressive Fish?
They Are a Peaceful Bunch Most of the Time but Can Show Signs of Aggression When Crowded or Surrounded by Aggressive Tank Mates. Therefore, It's Important That...
They are a peaceful bunch most of the time but can show signs of aggression when crowded or surrounded by aggressive tank mates. Therefore, it's important that their tank is big enough, and that they have suitable tank mates (more on this later). Some people mistake Molly Fish breeding behaviors as signs of aggression.
Why are my mollies aggressive?
The reasons why Molly fish will chase each other and seem aggressive has to do mostly with mating rituals that involve attention-seeking behavior. This is when a male molly chases a female molly or aggressively fights off the other male mollies in the tank.
Do mollies Nip other fish?
More than one molly can be kept in a tank together, however, they have been known to nip the fins of others in their tank. It is recommended that only one male molly be kept in a tank since males will fight with each other to establish a dominant alpha fish.